Storage battery.



1 each formed with a couple of offsets locatedf sets facing in opposite directions and standing vertically and at right angles to the top and bottom portions of the cross-pieces or 'horizontal portions it will be seen that the struction I find gives good results in use and renders the grid comparatively cheap and economical to manufacture.'

As the horizontal portions a3 have 'thin and unbroken or continuous outer edges, it is obvious that only a very small or minimum amount of inactive surface or metal surface is exposed and that a comparatively large or -maximum amount of active or paste surface is exposed, whileat the same time the plate has/a high degreeof conductivity, so that the ability of the battery to carry off the current is amply suflicient, notwithstanding its liberal or strong generating capacity.

In the foregoing description and in the following claims the expressffn active surface will be understood to mean the exposed surface of the paste 'or material to become active, while the expression inactive surface will be understood to mean the exposed surface of the metal grid.

What claim as Amy invention isi A storage-battery plate comprising a lead grid having cross-pieces each formed with longitudinally-extending top and bottom ofi'- sets facing in opposite directions, and suitable material to become active held in the recesses formed between the said cross-pieces, the top and bottom surfaces of said crosspieces extending horizontally from one face of the plate to the other, the said offset lsurfaces being vertical and at right angles to said horizontal surfaces, said horizontal portions. of the grid having comparatively thin and straight unbroken outer edges, whereby the opposite surfaces of the plate, when in use, present a maximum' of active surface' and a. minimum of inactive surface.

2. A. lead grid having horizontal portions each formed with top and bottom offsets facing i'n opposite directions, said offset surfaces being vertical and at right angles to the top and bottom surfaces of said horizontal portions, said horizontal portions of the grid having comparatively thin and straight unbroken outer edges, whereby ythe opposite surfaces of the plate, when in use, present a maximuu': of active surface and a minimum of .inactive surface.

3. A lead grid havinga number of parallel portions providing recesses between them and @website sides and facing in opposite'direesaid oll'set surfaces being vertical and parallel portions. whereby said recesses angles to the top and bottom. surfaces extending middle portieri, and

longitudinally-extepding offsets out of line with each other and facing in opposite4 direc'` tions, said offset surfacesbeing vertical and at right angles tothe top and bottom surfaces of the said parallel portions, and the-'said recesses being arranged in rows, both vertically and horizontally, the members of the vertical rows being arranged side to side, and the members ofthe horizontal rows being arranged end to end, said horizontal portions of the grid having comparatively thin and straight unbroken outer edges, whereby the opposite surfaces of the plate, when in use, present a maximum of active-surfaeejand a minimum of inactive surface.

5. A lead grid having parallel portions providing recesses between them' and each formed at its centerl with an upper longitudinally-eir-V tend-ing odset facing in one direction and with a lower longitudinally-extending ofsetfacing in an opposite direction, said oli'set surfaces being vertical and at right angles to the horizontal top and bottom surfaces of said parallel portions, whereby each of said parallel portions consists vin cross-section of an upper horizontal portion and lower horizontal portion, and a middle vertical portion connecting the inner-ends of the two horizontal portions, said horizontal portions of the grid having comparatively 'thin' and straight unbroken outer edges, whereby the opposite surfaces of the plate, when in use, present a maximum of v active surface and a minimum of inactivesurface.

' 6. Astorage-batteryplateeomprisingalead grid having .a plurality of upright portions and having also a plurality of parallel horizontal portions connecting said upright portions, each horizontal portion being formed at a point near its center. with an `upper lon' gitudinally-extending offset facing in one di-A rection and a, lower longitudinally-extending offset facing in an opposite direction, 'and IIO masses of' active material securely held by said alle! horizontal portions thereby consisting l in cross-section of upper and lower horizontal pnrtions connected at their inner'ends by my, @ze membes of @am verbca row being axfs'ange sde t@ Sidelq and the members of 5 each horizontal 'mw being arangffefiend to en mid sxarzunm portions of the grid havcompaatively thin :m- Straght unbroken Y outer edges,gwheieby the opposite surfaces of Sie plate., when in use, p'eSent a maximum of activ-e surface and a minimum of inactive sur-face.'

7.. A meta' grid having -pame prtons providing recesses befeween them, and each proved at oppose sides with osets facing 15j..- outwardy in opposite dllecto-ns each parae) tvey thin d Straight anbrkeu mitm egeie,

whei'eby the mppoite surfaces m' the pia-te, when in use, present L mzzxmum of as we surface and a, mmlmum mactw@ @mimi-2.

Signed by me at Chicago, @ook souuty, i-

moiss this 8th day 0f June, j.

W'LLAM Titanessesi CLARENCE M. THORNE,

A. F. DURAND. 

